Finding the Fourth Proportional to 72,187.49, 108,208.52 and 30,090.86

Step by Step Solution

1. Step 1: Write the proportion equation
   72,187.49 : 108,208.52 = 30,090.86 : x
2. Step 2: Convert to fraction form
   72,187.49/108,208.52 = 30,090.86/x
3. Step 3: Cross multiply
   72,187.49x = 108,208.52 × 30,090.86
4. Step 4: Simplify right side
   72,187.49x = 3,256,086,734.63
5. Step 5: Solve for x
   x = 3,256,086,734.63/72,187.49
6. Step 6: Final answer
   x = 45,105.97